DE3374729D1 - Servo track encodement system in a disk file - Google Patents

Servo track encodement system in a disk file

Info

Publication number
DE3374729D1
DE3374729D1 DE8383109325T DE3374729T DE3374729D1 DE 3374729 D1 DE3374729 D1 DE 3374729D1 DE 8383109325 T DE8383109325 T DE 8383109325T DE 3374729 T DE3374729 T DE 3374729T DE 3374729 D1 DE3374729 D1 DE 3374729D1
Authority
DE
Germany
Prior art keywords
encodement
disk file
servo track
servo
track
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DE8383109325T
Other languages
German (de)
English (en)
Inventor
Martin Hans-Ulrich Dost
Chung Chuan Liu
Francis Edward Mueller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of DE3374729D1 publication Critical patent/DE3374729D1/de
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/596—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
    • G11B5/59688—Servo signal format patterns or signal processing thereof, e.g. dual, tri, quad, burst signal patterns

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
  • Control Of Position Or Direction (AREA)
DE8383109325T 1982-11-01 1983-09-20 Servo track encodement system in a disk file Expired DE3374729D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/438,219 US4490756A (en) 1982-11-01 1982-11-01 Servo encodement and detection system using tetra-orthogonal servo pattern

Publications (1)

Publication Number Publication Date
DE3374729D1 true DE3374729D1 (en) 1988-01-07

Family

ID=23739741

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8383109325T Expired DE3374729D1 (en) 1982-11-01 1983-09-20 Servo track encodement system in a disk file

Country Status (4)

Country Link
US (1) US4490756A (enrdf_load_stackoverflow)
EP (1) EP0108226B1 (enrdf_load_stackoverflow)
JP (1) JPS5990265A (enrdf_load_stackoverflow)
DE (1) DE3374729D1 (enrdf_load_stackoverflow)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59157810A (ja) * 1983-02-28 1984-09-07 Sony Corp デジタル信号の再生方法
US5229891A (en) * 1986-11-06 1993-07-20 Canon Kabushiki Kaisha Tracking control system using single frequency pilot signal
US4951162A (en) * 1986-11-06 1990-08-21 Canon Kabushiki Kaisha Tracking control system with pilot signal phase setting circuitry
JP2504122B2 (ja) * 1988-06-06 1996-06-05 三菱電機株式会社 磁気ディスク装置
US5245487A (en) * 1989-01-27 1993-09-14 International Business Machines Corporation Transducer head for rigid disk drive
US5488520A (en) * 1992-06-02 1996-01-30 Hitachi, Ltd. Data recording and playback apparatus using helical scan system with magnetic head for recording and playing back pattern signal for tracking in tracking area within helical track
US5615065A (en) * 1994-10-04 1997-03-25 International Business Machines Corporation Phase-compensated servo pattern and position error-sensing detector
KR100252182B1 (ko) * 1998-02-23 2000-07-01 윤종용 위상이 서로 다른 서보패턴이 기록된 하드디스크 및 그 트랙킹방법
JP3340077B2 (ja) * 1998-11-30 2002-10-28 富士通株式会社 サーボ制御方法及び情報記憶装置
US6496328B1 (en) 1999-12-30 2002-12-17 Advanced Research Corporation Low inductance, ferrite sub-gap substrate structure for surface film magnetic recording heads
US7126780B2 (en) * 2002-04-09 2006-10-24 Hitachi Global Storage Technologies Netherlands B.V. Method, system, and article of manufacture for self-servowriting a disk
US7106544B2 (en) * 2003-05-09 2006-09-12 Advanced Research Corporation Servo systems, servo heads, servo patterns for data storage especially for reading, writing, and recording in magnetic recording tape
US8144424B2 (en) 2003-12-19 2012-03-27 Dugas Matthew P Timing-based servo verify head and magnetic media made therewith
JP2007536683A (ja) 2004-05-04 2007-12-13 アドバンスト・リサーチ・コーポレーション 任意形状のギャップ・パターンのための集積型薄膜サブギャップ／サブ磁極構造、磁気記録ヘッド、及びその製造方法
US7453663B1 (en) * 2004-06-09 2008-11-18 Maxtor Corporation Disk drives with servo burst patterns radially offset in different radial spokes of a disk and methods of positioning based thereon
US7441572B2 (en) * 2004-09-17 2008-10-28 The Goodyear Tire & Rubber Company Pneumatic tire having a tread containing immiscible rubber blend and silica
JP4327824B2 (ja) * 2006-06-30 2009-09-09 株式会社東芝 磁気ディスク装置、サーボ書込み方法及び検査方法
US8068302B2 (en) 2008-03-28 2011-11-29 Advanced Research Corporation Method of formatting magnetic media using a thin film planar arbitrary gap pattern magnetic head
WO2011014836A2 (en) 2009-07-31 2011-02-03 Advanced Research Corporation Erase drive systems and methods of erasure for tape data cartridge
US9336829B2 (en) 2011-11-21 2016-05-10 Marvell International Ltd. Data recording medium, method for generating a reference clock signal, and data storage device
US8922926B2 (en) 2011-11-21 2014-12-30 Agency for Science, Technology Research Data recording medium and method for generating a reference clock signal
US9070410B2 (en) 2012-07-20 2015-06-30 Marvell International Ltd. Recording media, data storage devices, and methods for determining a position error signal in a recording medium

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB987357A (en) * 1962-11-30 1965-03-24 Ibm Memory system employing a magnetic recording medium
US3839665A (en) * 1970-03-30 1974-10-01 A Gabor Apparatus measuring relative velocity of movable members including means to detect velocity from the position encoder
BE794737A (fr) * 1972-02-18 1973-05-16 Ibm Systemes d'enregistrement de signaux digitaux
US3821798A (en) * 1972-02-18 1974-06-28 Ibm Resynchronizable recording system
US3956769A (en) * 1974-08-12 1976-05-11 Control Data Corporation Recording system having coinciding servo and data tracks
US4213148A (en) * 1978-09-01 1980-07-15 Rca Corporation Recording/playback apparatus using a single pilot tone for active tracking and control of a video disc pickup device
US4318141A (en) * 1979-12-07 1982-03-02 International Business Machines Corp. Buried servo recording systems and methods
US4286296A (en) * 1979-12-31 1981-08-25 International Business Machines Corporation Transducer positioning system
GB2085189B (en) * 1980-09-19 1984-03-28 Burroughs Corp Head position system for disc data store
US4432026A (en) * 1981-08-10 1984-02-14 Ampex Corporation Apparatus and method for determining read head position

Also Published As

Publication number Publication date
EP0108226A1 (en) 1984-05-16
JPH026153B2 (enrdf_load_stackoverflow) 1990-02-07
EP0108226B1 (en) 1987-11-25
US4490756A (en) 1984-12-25
JPS5990265A (ja) 1984-05-24

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee